基于ADO的SQL Server数据库访问技术的研究

SQL Server是一个已被许多公司和企业广泛应用的功能强大的、可缩放的、高性能的关系型数据库管理系统,而ADO是微软公司正大力支持和发展的数据库访问技术.随着网络技术的发展,使用ADO访问SQL Server数据库将是大势所趋.笔者结合自己的编程体会,用Visual C++示例代码说明了如何使用ADO技术连接、遍历和更新SQL Server数据库.从中可以看出,利用ADO技术使得人们从具体的数据库管理系统中解脱出来,从而极大地减少了软件开发的工作量,提高了效率.     

高校科研管理系统数据库设计与实现

数据库设计是科研管理系统设计的核心,该文从数据库表的创建、SQL Server数据库关键技术的应用、数据库用户安全性管理、ADO.NET数据库访问技术和SQL Server数据库连接5个方面阐述高校科研管理系统数据库的设计与实现。     

高校科研管理系统数据库设计与实现

数据库设计是科研管理系统设计的核心,该文从数据库表的创建、SQL Server数据库关键技术的应用、数据库用户安全性管理、ADO.NET数据库访问技术和SQL Server数据库连接5个方面阐述高校科研管理系统数据库的设计与实现。     

VC下利用ADO访问SQL Server技术

介绍了ADO的基本特点、对象模型以及VC下ADO访问SQL Server数据库的基本技术，并对其中使用的关键数据类型和数据库中二进制数据访问方法进行了较为详细的介绍，给出了访问二进制数据的示例代码。     

基于VB的SQL Server数据库访问技术

目前,Visual Basic程序访问SQL Server数据库的方法有多种,文中介绍了Visual Basic应用程序访问SQL Server数据库三种常用的方法——DAO、RDO和ADO的技术原理,并对这些方法进行比较,认为DAO、RDO和ADO数据接口各有其优缺点,使用时取决于用户的应用程序的具体情况。     

ASP操作WEB数据库的原理与实际应用

介绍ASP中使用ADO数据对象操作WEB数据库的原理，并通过一个访问SQL Server的例子描述ADO访问WEB数据库的实际操作步骤。     

基于SQL的高校图书信息检索管理系统的设计

为提升高校图书信息检索的速度和信息检索系统的整体性能，使用SQL Server 2016和Visual Studio 2017设计了基于浏览器/服务器（B/S）架构的高校图书检索管理系统，包括系统总体设计、数据库设计和页面设计3个部分。使用ADO.NET技术访问数据库，同时为解决检索速度和检索效率问题，设计使用了模糊关键字查找算法。与传统检索管理系统相比，基于SQL的高校图书信息检索管理系统的设计具有较大的优势，无论是其稳定性，还是检索效率，抑或是运行速度均有较大幅度的提升。     

VB应用程序连接SQL Server数据库方法的探讨

在VB开发环境中,可以使用三种数据库访问方式：数据访问对象(DAO)、远程数据对象(RD0)和ActiveX数据对象(ADO)模型。本文重点阐述了ADO对象模型的特点、连接方式和连接SQL Server数据库的参数设置,并用具体的实例说明如何连接SQL Server 2000数据库。     

基于VC. NET的数据访问技术与实现

为了完成数据管理系统开发中专项数据的组织调用和管理,设计将数据存入到数据库表的结构化字段中,使用VC++程序开发语言和ADO数据访问技术,结合使用ActiveX控件对数据进行安全存储和组织访问,从而达到了简单、安全、快速操作数据库中的数据的目的.文中介绍了微软ADO数据访问技术体系结构、对象模型,以及存储访问数据的原理与方法,并在此基础上给出了基于VC++. NET和ADO数据访问技术存储访问SQL Server数据库数据的程序规划和详细程序代码,此方法已成功应用在数据管理系统的开发中     

基于VC＋＋的地调资料管理系统的设计与实现

本文介绍了如何利用Visual C＋＋6．0开发西南地区地质灾害调查管理系统。系统开发主要是使用ADO数据控件和ADO对象．以及SQL SER VER2000数据库技术。重点阐述了ADO访问数据库技术、系统的详细设计与实现过程以及系统开发过程中的关键技术，并给出了主要程序代码。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate